Cloth roll drive



1938. w. J. BUDZYNA 2,127,659

CLOTH ROLL DRIVE Filed Sept. 22, 1937 INVENTOR. MLTEE d 5002 YNA.

BY/GM ATTORNEY.

Patented Aug. 23, 1938 UNITED STATES CLOTH ROLL DRIVE Walter J. Budzyna, East Douglas, Mass, assignor to Draper Corporation, Hopedale, Mass., a corporation of Maine Application September 22, 1937, Serial No. 165,109

3 Claims.

The present invention pertains to loom takeups, and more particularly to the cloth roll drive thereof.

In loom take-ups of the type to which my invention applies, the cloth is wound onto a cloth arranged that the cloth roll could be freed from the driving member only by unscrewing adjusting nuts which were provided for adjusting the ten sion of the aforesaid spring means. The unscrewing of such adjusting nuts is a time-consuming operation, and is further objectionable in that it destroys the adjustment and thus provides an opportunity for improper readjustment of the tension on the friction shoes. Several attempts have been made to overcome this objectionable feature of the commercial form of cloth roll drive, but the constructions proposed heretofore have not been satisfactory for various reasons, which need not be discussed.

A principal object of the present invention is to provide, in a cloth roll drive for loom take-ups, a cloth roll having a gudgeon, a rotating driving member on the gudgeon, friction shoes connected to the gudgeon, and spring means for urging the shoes into engagement with the driving member as aforesaid, and a novel manually operable cam means carried by the shoes and operable to release the shoes from the driving member against the action of said spring means, whereby any adjusting means provided for the spring means need not be disturbed when it is desired to free the cloth roll for rotation independent of the driving member.

The foregoing and other objects of the invention are accomplished in the construction illustrated on the accompanying drawing, of which:

Fig. 1 is a perspective view of part of a loom having the preferred embodiment of my invention applied thereto;

Fig. 2 is a detail view, to a larger scale, of certain parts shown on Fig. 1;

Fig. 3 is a view in cross-section taken approximately on line 3-3 of Fig. 2,but with the releasing cam turned around from its Fig. 2 position so as to appear in full lines; and v Fig. 4 is a detail of the releasing cam and certain contiguous parts.

The drawing shows parts of a loom frame, including the front part of a right hand loom side l ,a breastbeam 2, a girt 3 and a vertical stand 4 which is supported by the breast beam and girt. A take-up roll or feed roll 5 is journalled in suitable bearings supported by stands such as the stand 4. The take-up roll 5 is positively revolved at a uniform speed, to feed the cloth forwardly in the loom, by any suitable usual means not shown. The cloth C whichis thus fed by the take-up roll is found onto a roll 6 commonly called a cloth roll. 'The cloth roll must revolve at a comparatively faster rate when substantially empty than when nearly full, the rate progressively decreasing as the diameter of thev cloth supply increases. 1

The cloth roll 6 has a fixed gudgeon 1 projecting from the end thereof, which gudgeon may be journalled in a bearing 8 supported by the stand 4. The varying speed of the cloth roll requires that the roll be driven by a friction or slipping drive and such drive is commonly effected from a rotating driving member loosely mounted on the cloth roll gudgeon. The drawing shows at.9 a conventional form of such driving member, which is loosely mounted on the gudgeon 1. The driving member 9 includes a friction drum in and a sprocket ll formed integrally with the drum. A chain I2 passes around the sprocket I l and around a sprocket l3 which revolves with the take-up roll 5, whereby the member 9 is revolved by the take-up roll. The aforesaid slipping drive is provided by friction means engaging and driven by the drum I0.

In the embodiment shown, the friction element 40 driven by the drum l comprises radially acting shoes l4 and I which are pivoted together by means of a pivot pin l6. These shoes are curved to fit the external periphery of the drum I!) so that they constitute a friction band which is sup- 45 ported on the drum. The shoes l4 and I5 have positive driving connection with the gudgeon 1, as by means of a driven part I I. The part I! consists of an arm which is fixed to the gudgeon l by set screws 18 and the free end IQ of which 50 is connected to the shoe M by being bent over and positioned in a socket 20 in the shoe.

Spring means for urging the shoes into frictional engagement with the drum I0 may include a coiled compression spring 2| and a bolt 22. The 55 adjusting nuts- 26.

free ends 23 and 24 of the shoes l4 and I5 are turned outwardly approximately radially and the bolt 22 passes loosely through holes in such ends. A head 25 on one end of the bolt engages the end 23. The spring 2| is positioned on the end of the bolt opposite the head 25 and is compressed between adjusting nuts 26 and the end 24 of shoe I5. Thespring thus acts on the bolt 22 and on the shoe I5 to contract the shoes, i, e., to urge the shoes together, into frictional engagement with the drum ll).

member 9 but the friction shoes may slip on the drum so that the cloth roll is revolved only just fast enough to wind up the cloth C that is fed.

by the take-up roll 5.

It will be apparent that whenever the cloth is to be removed from the cloth roll, or the roll is to be manually rotated for any other reason, such rotation must be effected against the frictional resistance of, the shoes 14 and i5 on drum it) or theshoes must be released frorn the drum. -fIhe former is obviously impractical and to release the shoes "by. unscrewing the adjusting nuts 26' would be objectionable for reasons above stated; I have accordingly provided manually operable cam means'for expanding or releasing the shoes from driving engagement withthe drum against;the.

action of the spring 2|, without disturbing the The pref erred embodiment of the aforesaid cam means comprises a cam 21 whichis carried by the friction shoesand which is manually rotatable into engagement with oneofqthe shoes. To this end, the cam may be gripped between a nut 28 and a knurled-nut: 29 whichare threadedonto the bolt 22. These nuts may be loosened and then turned: to adjust-the cam longitudinally of i the boltbut when tightened the nuts firmly hold'the camzagainstany movement relative to the bolt;v

In the normal operation of thezloom, the-cam 2.'lwill be positionedzas shown on the drawing,

that is; it will be out of engagement with the friction shoes; Whenthe loom is stopped and the cloth roll is to be' manually, rotated, the nut 29 may be grasped and'the nutebolti 22 and the cam. 21 r manually rotated in'either direction to bring the cam into engagement with the end 24 of shoe l5. inclined edge-:3il of end 2 land pulls the bolt 22 endwise against the action of spring 2 6. expands or'releases'the shoes from the drum l0 and thus frees the cloth roll so that it'may be When the spring, so acts, the cloth roll is revolved by the driving At such time the cam rides up the- This manually rotated independently of the driving member 9.

Having fully disclosed the preferred embodigether and being curved to fit the external periphery of said drum, a bolt passing through the freeends of said shoes, spring means acting on the free ends of said shoes to urge the shoes into frictionalengagement with said drum, and a cam "mounted on said bolt, said cam being manually rotatable into engagement With the free end of oneof said shoes to release the shoes from said drum against the action of said spring means.

2. In a cloth roll drive for loom take-ups, the combination of a cloth roll'having a gudgeon, a drivingmember comprising a'revolving friction drum loosely mounted on said gudgeon, a pair of friction shoes having fixed driving connection with' said-gudgeon, said shoes being pivoted together and being curved to'flt-the external'pe-- riphery .of' said drum, a bolt passing through the free endsof said'shoes, a spring acting on said bolt and on one of said shoes to urge both shoes into frictional engagement with said drum,'-and a cam mounted on said bolt betweenvthe free ends of said shoes, said camrbeing manually rotatable into engagement with one, of said shoes'to release the. shoesfrom said drum against the action of said spring.

3. Ina-manually releasable cloth roll drive for loom take-ups, the combination of adriving member; comprising a revolving friction drum, a

driven element comprising; a pair of friction shoes 1 pivoted togetherandcurved to fit the external periphery of said drum; a bolt passing-through the freerends' ofsaid-shoes', said-bolt having a headengagingeone :of said shoes; a compressionspring on the otherend of said bolt, said spring acting on said bolt and onone' of said shoes to urge both shoes' into frictional engagement with said drum, anda cam fixed on said bolt between the free ends of saidfshoes, said cam being manually rotatable into eng-agement-with one-of saidshoes -topull said bolt endwise againstthe actionof said spring to thereby release the shoes fromsaid drum,

ALTER J BUDZYNAI- 

